InChI=1/C17H13ClN2O4/c1-9-19-13-8-11(2-3-14(13)24-9)20-17(21)10-6-12(18)16-15(7-10)22-4-5-23-16/h2-3,6-8H,4-5H2,1H3,(H,20,21)/f/h20H 5EE7499F503EC41E